Analysis of Influential Factors on the Evaluation of Regional Seismic Collapse Risk

Hyung Sun Jeon; Dong-Hyeon Shin; Jaedo Kang; Hyung-Joon Kim

doi:10.7734/COSEIK.2025.38.5.331

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2025 Vol.38, Issue 5 Preview Page Next Page

Research Paper

Analysis of Influential Factors on the Evaluation of Regional Seismic Collapse Risk 지역단위 지진 붕괴위험도에 대한 영향요인 분석

31 October 2025. pp. 331-338

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Abstract

To minimize seismic losses from earthquakes, it is essential to develop effective prevention and rehabilitation strategies both before and after such events. Particularly, regional seismic risk must be comprehensively investigated for buildings susceptible to large-scale damage. This study conducted regional seismic risk evaluation using the collapse risk framework which incorporates structural seismic fragility and site amplifications. Evaluation results indicate that the distribution of different types of buildings can significantly influence the regional seismic collapse risk. In several regions, seismic risk was not directly related to the seismic capacity of buildings; instead, response amplifications from different site classes were more influential in increasing regional seismic risk. These findings underscore the importance of incorporating both seismic capacity and site effects during regional seismic collapse risk evaluation.

Keywords

regional evaluation

seismic collapse risk

influential factors

seismic fragility

지진 발생 시 지진으로 인한 피해를 최소화하기 위해서는 지진 발생 이전의 재난 대비와 발생 이후의 복구계획 수립이 중요하다. 특히 효과적인 대응체계 마련을 위해서는 심각한 피해가 예상되는 건축물을 대상으로 지진위험도를 평가하여 건축물의 피해를 예측하는 과정이 지역사회를 단위로 수행되어야 한다. 본 논문에서는 건축물의 취약도와 지반운동이 결합되어 결정되는 지진위험도를 평가하기 위해서 공학적으로 정량적으로 판단할 수 있는 지진 붕괴위험도의 개념을 활용하여 지역단위 평가를 수행하였다. 평가 결과, 행정구역 내 건축물의 구조유형 분포는 해당 지역 붕괴위험도 평가에 유의미한 영향을 미침을 확인하였다. 그러나 일부 지역에서는 구조유형만으로 설명할 수 없는 양상을 보였는데, 이는 지반종류에 따른 영향이 지역단위 붕괴위험도 평가에 있어 미치는 영향이 상대적으로 크다고 판단할 수 있으며, 합리적인 평가결과 도출을 위하여 건축물의 내진성능에 의한 붕괴위험도와 반드시 함께 고려될 필요가 있음을 설명한다.

키워드

지역단위 평가

지진 붕괴위험도

영향요인

지진취약도

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 38
No :5
Pages :331-338
Received Date : 2025-06-20
Revised Date : 2025-07-14
Accepted Date : 2025-07-15
DOI :https://doi.org/10.7734/COSEIK.2025.38.5.331

Journal of the Computational Structural Engineering Institute of Korea ISSN:1229-3059(Print) 2287-2302(Online) 한국전산구조공학회 논문집

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